fox shark vs thresher shark

fox shark and thresher shark both are nouns.

Word	Noun	Adjective	Verb	Adverb
fox shark	Yes	No	No	No
thresher shark	Yes	No	No	No

As nouns, fox shark and thresher shark are synonyms defined as:

fox shark and thresher shark: large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed

Other synonyms of fox shark include Alopius vulpinus, thrasher, thresher.

fox shark (noun)	thresher shark (noun)
large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed	large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed